Intelligent label for sliding monitoring, intelligent label preparation method and monitoring system

Abstract

The invention discloses an intelligent label for sliding monitoring, an intelligent label preparation method and a monitoring system.The label comprises a digital printing paper substrate, a sliding monitoring inner electrode and a sliding monitoring outer electrode, the sliding monitoring inner electrode and the sliding monitoring outer electrode are arranged on the substrate in a sleeved mode through silk screen overprinting, and the sliding monitoring inner electrode and the sliding monitoring outer electrode are coated with a mixed solution WPU / TiO2 and completely covered; forming an internal sliding sensing layer, and fixing an FEP adhesive tape on the bottom surface of the monitored object to form an external sliding sensing layer; the external sliding sensing layer and the internal sliding sensing layer slide at any angle, so that the sliding monitoring inner electrode and the sliding monitoring outer electrode generate potential difference, electron movement is caused, current is generated, and displacement motion of sliding at any angle is converted into electric signals to be output; according to the invention, based on the difference between the material characteristics and the charge exchange capability, efficient self-driven information indication is realized, no extra electric energy is consumed, the problem of battery driving is solved, and the sliding monitoring system has the characteristics of simple structure, rapid response and obvious indication.

Description

Technical Field

[0001] The present invention relates to the field of Internet of Things intelligent packaging, and in particular to an intelligent label for sliding monitoring, a method for preparing the intelligent label, and a monitoring system. Background Art

[0002] During packaging, transportation, exhibition, etc., items may shift or slide due to various reasons, which may not only damage the items themselves, but also affect the preservation of the items. The sliding monitoring technology can monitor the displacement of items in real time. Once an abnormality is found, it will immediately trigger a local alarm and upload the information to the APP through the Internet of Things module to achieve remote monitoring and early warning.

[0003] Existing monitoring devices often rely on external power sources such as batteries for driving, which not only increases the complexity and cost of the device, but may also cause monitoring failure due to battery exhaustion. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to propose a smart label for sliding monitoring, a smart label preparation method and a monitoring system, which does not consume additional electrical energy. The sliding monitoring system has the characteristics of simple structure, rapid response and obvious indication.

[0005] The technical solution adopted by the present invention is:

[0006] A smart label for sliding monitoring, comprising a digital printing paper substrate, a sliding monitoring inner electrode and a sliding monitoring outer electrode are mutually sleeved by screen overprinting on the digital printing paper substrate, a mixed solution WPU / TiO2 is coated on the sliding monitoring inner electrode and the sliding monitoring outer electrode and completely covers them to form an internal sliding sensing layer, and an FEP tape is fixedly arranged on the bottom surface of the monitoring object to form an external sliding sensing layer;

[0007] When the external sliding sensing layer and the internal sliding sensing layer slide at any angle, a potential difference is generated between the sliding monitoring inner electrode and the sliding monitoring outer electrode. The potential difference causes the movement of electrons to generate current, thereby realizing the conversion of displacement motion of sliding at any angle into electrical signal output.

[0008] Furthermore, the sliding monitoring inner electrode and the sliding monitoring outer electrode are formed by overprinting a copper ink screen on a digital printing paper substrate, and TiO2 in the mixed solution WPU / TiO2 accounts for 1wt%-10wt% of WPU.

[0009] Furthermore, the sliding monitoring inner electrode is circular and has a guide wire, and the sliding monitoring outer electrode is annular and has a guide wire.

[0010] Furthermore, the outer circle diameter of the sliding monitoring outer electrode is 7-8 cm, and the inner circle diameter is 6-7 cm; the diameter of the sliding monitoring inner electrode is 4-5 cm.

[0011] A method for preparing a smart label for sliding monitoring, comprising:

[0012] Step 1: Print and dry the copper ink on a digital printing paper substrate by screen overprinting to obtain a sliding monitoring inner electrode and a sliding monitoring outer electrode that are nested with each other to obtain a planar nested electrode;

[0013] Step 2: Take a certain mass of waterborne polyurethane, add 1wt%-10wt% of TiO2 powder and mix to prepare a mixed solution WPU / TiO2;

[0014] Step 3: Apply the mixed solution WPU / TiO2 as ink on the top of the sliding monitoring inner electrode and the sliding monitoring outer electrode and completely cover them, and form an internal sliding sensing layer after drying;

[0015] Step 4: FEP tape is fixed on the bottom surface of the monitored object to form an external sliding sensing layer; the external sliding sensing layer and the internal sliding sensing layer output alternating current through sliding friction to obtain a smart tag for sliding monitoring.

[0016] Furthermore, in the step 1, the sliding monitoring inner electrode and the sliding monitoring outer electrode are made by screen overprinting with a screen line count of 150-200 meshes, a screen spacing of 2-3mm, a printing pressure of 0.25-0.45MPa, and a printing speed of 10-15cm / s, and the screen overprinting is sintered on a hot plate at 120°C for 20-30min.

[0017] Furthermore, in step 2, the mixed solution WPU / TiO2 is ultrasonically treated for 1-1.5 hours and mechanically stirred at a speed of 700-900 rpm for 12-16 hours to ensure uniform mixing and stable dispersion.

[0018] Furthermore, in the step 3, the mixed solution WPU / TiO2 is coated on the top of the sliding monitoring inner electrode and the sliding monitoring outer electrode by wire rod coating, and annealed on a hot stage at 120°C for 30-45 minutes.

[0019] A monitoring system for sliding monitoring based on smart tags, characterized by comprising: a smart tag, a signal processing circuit, a NodeMCU module, a relay and an alarm;

[0020] Among them, the smart tag collects displacement motion and converts it into electrical signals, and transmits the electrical signals to the signal processing circuit. The signal processing circuit converts the electrical signals into digital signals, and the digital signals are transmitted to the digital input interface of the NodeMCU module. The digital output interface of the NodeMCU is connected to the relay, the relay is connected to the alarm, and the relay controls the switch of the alarm.

[0021] The beneficial effects of the present invention are:

[0022] The article of the present invention is displaced during transportation, and the displacement is movement at different angles. The uneven distribution of friction-induced charges during the sliding process of the internal sliding sensing layer and the external sliding sensing layer causes uneven distribution of electrostatic induced charges of the two electrodes, thereby causing a potential difference between the two electrodes to realize reciprocating AC output. Specifically, any sliding angle of the external sliding sensing layer is tangent to the two electrodes, thereby ensuring that the two electrodes can generate a potential difference at multiple angles, and electrons flow from the sliding monitoring outer electrode to the sliding monitoring inner electrode, that is, the current flows from the sliding monitoring inner electrode to the sliding monitoring outer electrode, thereby realizing reciprocating charge movement, which is a complete AC output process. The smart tag converts the displacement motion into an electrical signal. The present invention utilizes the difference in material properties and charge exchange capacity to realize self-driven information indication, and does not need to consume additional electrical energy to form a passive sensing device. It is widely used in logistics transportation, transportation of medicines and biological products, transportation of high-risk and high-value goods such as precision equipment and cultural relics, and other fields that require comprehensive real-time monitoring of the transportation process.

[0023] The smart label of the present invention is prepared by screen printing, which is environmentally friendly, low-cost, and simple in process. The smart label has obvious indication effect, rapid system response, and stable information. The smart label forms a monitoring system based on the energy conversion of sliding at any angle to realize sliding alarm during the transportation of items. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the structure diagram of the smart tag;

[0025] Figure 2 It is a top view of the smart label;

[0026] Figure 3 It is a diagram of the components of the monitoring system;

[0027] Figure 4 is a schematic diagram of the monitoring system;

[0028] Figure 5 (a) Physical picture of the IoT smart packaging system;

[0029] Figure 5(b) Actual picture of the displacement-triggered alarm of the IoT smart packaging system.

[0030] Among them: 1. Digital printing paper substrate; 2. Sliding monitoring inner electrode; 3. Sliding monitoring outer electrode; 4. Internal sliding sensing layer. DETAILED DESCRIPTION

[0031] The structural principle and working principle of the present invention are further described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 and Figure 2 As shown, a smart label for sliding monitoring includes a digital printing paper substrate 1, on which a sliding monitoring inner electrode 2 and a sliding monitoring outer electrode 3 are mutually nested by screen overprinting, and a mixed solution WPU / TiO2 is coated on the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 and completely covers them to form an internal sliding sensing layer 4, and a FEP tape (fluorinated ethylene propylene copolymer) is adhered to the bottom surface of the monitored object to form an external sliding sensing layer;

[0033] When the external sliding sensing layer slides at any angle, it will be tangent to the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 to generate a potential difference, causing the movement of electrons to generate current, thereby realizing the conversion of the displacement motion of sliding at any angle into an electrical signal output.

[0034] The sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 are made by screen printing copper ink on a digital printing paper substrate 1. In the mixed solution WPU / TiO2, TiO2 accounts for 1wt%-10wt% of WPU, and the specific amount is based on the requirements of screen printing and coating.

[0035] The sliding monitoring inner electrode 2 is circular and has a guide wire, and the sliding monitoring outer electrode 3 is annular and has a guide wire.

[0036] The outer circle diameter of the sliding monitoring outer electrode 3 is 7-8 cm, and the inner circle diameter is 6-7 cm; the diameter of the sliding monitoring inner electrode 2 is 4-5 cm.

[0037] A method for preparing a smart label for sliding monitoring, comprising:

[0038] Step 1: On a digital printing paper substrate 1, copper ink is printed and dried by screen overprinting to obtain a sliding monitoring inner electrode 2 and a sliding monitoring outer electrode 3 that are nested with each other, thereby obtaining a planar nested electrode;

[0039] Step 2: Take a certain mass of waterborne polyurethane, add 1wt%-10wt% of TiO2 powder and mix to prepare a mixed solution WPU / TiO2;

[0040] Step 3: Apply the mixed solution WPU / TiO2 as ink on the top of the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 and completely cover them. After drying, an internal sliding sensing layer 4 is formed.

[0041] Step 4: Glue FEP tape to the bottom surface of the monitored object to form an external sliding sensing layer; the external sliding sensing layer and the internal sliding sensing layer 4 slide and rub against each other to output alternating current, thereby obtaining a smart tag for sliding monitoring.

[0042] In the step 1, the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 are made by screen overprinting, using a screen line count of 150-200 meshes, a screen spacing of 2-3mm, a printing pressure of 0.25-0.45MPa, and a printing speed of 10-15cm / s. The screen overprinting is sintered on a hot plate at 120°C for 20-30min.

[0043] In step 2, the mixed solution WPU / TiO2 is ultrasonically treated for 1-1.5 hours and mechanically stirred at a speed of 700-900 rpm for 12-16 hours to ensure uniform mixing and stable dispersion. The specific amount of the mixed solution WPU / TiO2 is based on the requirements of screen printing and coating.

[0044] In the step 3, the mixed solution WPU / TiO2 is coated on the top of the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 by wire rod coating, and annealed on a hot stage at 120° C. for 30-45 minutes.

[0045] like Figure 3 and Figure 4 As shown, a monitoring system for sliding monitoring includes: a smart tag, a signal processing circuit, a NodeMCU module, a relay and an alarm;

[0046] Among them, the smart tag collects displacement motion and converts it into electrical signals, and transmits the electrical signals to the signal processing circuit. The signal processing circuit converts the electrical signals into digital signals, and the digital signals are transmitted to the digital input interface of the NodeMCU module. The digital output interface of the NodeMCU is connected to the relay, the relay is connected to the alarm, and the relay controls the switch of the alarm.

[0047] The printing preparation and monitoring feedback system of the packaging and transportation sliding monitoring smart label is composed of a smart label part, a signal processing circuit part, a NodeMCU module part, a sensor part, a relay part and an alarm part. The smart label is composed of an internal sliding sensing layer 4, a sliding monitoring outer electrode 3, a sliding monitoring inner electrode 2, and a digital printing paper substrate 1 from top to bottom. The raw material of the internal sliding sensing layer 4 is made of ink coating prepared from a mixed solution of waterborne polyurethane (WPU) and titanium dioxide (TiO2), and the sliding monitoring outer electrode 3 and the sliding monitoring inner electrode 2 are made of conductive copper ink through screen printing; the sensor part includes a temperature and humidity sensor, a flame sensor, a vibration sensor and a light sensor;

[0048] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 5(a) and 5(b) are methods for making a sliding monitoring smart label based on screen printing, which are specifically implemented according to the following steps:

[0049] Step 1: Design the structure of the sliding monitoring intelligent indicator label. The internal sliding sensing layer 4, the sliding monitoring outer electrode 3, the sliding monitoring inner electrode 2, and the digital printing paper substrate 1 are designed to be of appropriate size and shape. Figure 1 , Figure 2 The structure of the smart indicator label is designed to have a screen printing plate with a mesh number of 150-200, the outer circle diameter of the sliding monitoring outer electrode 3 is 7-8 cm, and the inner circle diameter is 6-7 cm; the diameter of the sliding monitoring inner electrode 2 is 4-5 cm, and the preparation before manufacturing is carried out according to the above structural dimensions and screen printing parameters.

[0050] Step 2: Use conductive copper ink, print the ink on digital proofing paper by screen printing, and dry it to obtain a uniform sliding monitoring inner electrode. The sliding monitoring inner electrode part adopts a customized screen. The outer circle diameter of the sliding monitoring outer electrode 3 is 7-8cm, and the inner circle diameter is 6-7cm; the diameter of the sliding monitoring inner electrode 2 is 4-5cm. The conductive copper ink is evenly deposited on the digital proofing paper and sintered on a hot plate at 120°C for 20-30min.

[0051] Step 3: Based on step 2, the inner electrode is positioned and slidably monitored, and the outer electrode is prepared by overprinting copper ink by screen printing. The inner electrode is positioned and slidably monitored, and the outer electrode is prepared by overprinting copper ink by screen printing to obtain a planarized nested electrode preparation.

[0052] Step 4: Take a certain mass of WPU, add 1wt%-10wt% TiO2 powder to mix with WPU, use the mixed solution of waterborne polyurethane and titanium dioxide as raw materials to prepare a composite ink, ultrasonically treat it at room temperature for 1-1.5h, and mechanically stir the WPU / TiO2 mixture at a speed of 700-900rpm for 12-16h to ensure uniform mixing and achieve stable dispersion.

[0053] Step 5: Use a wire rod coater to coat the top of the electrode and completely cover it, anneal on a 120°C hot plate for 30-45 minutes, and after drying, make an internal sliding sensing layer. The various parts are nested to form a packaging and transportation sliding monitoring smart label.

[0054] Step 6: The smart tag is connected to the signal processing circuit. If the item is displaced during transportation, the smart tag converts the displacement motion into an electrical signal, and the signal processing circuit converts the AC continuous analog signal into a digital signal.

[0055] Step 7: The digital signal is transmitted to the NodeMCU digital input interface, which is then connected to the temperature and humidity sensor, flame sensor, vibration sensor and light sensor respectively. The digital output interface is connected to the relay to control the switch of the alarm.

[0056] Step 8: All data is transmitted to the cloud through the WI-FI module of NodeMCU, and the video surveillance module is transmitted to the cloud independently of other data.

[0057] Step 9: When the mobile phone APP receives the alarm information, the displacement monitoring part changes from "normal" to "alarm", and the video monitoring interface can also view the status of the packaging and alarm in real time. The data is sent to the APP to issue the alarm information, and the video monitoring interface can also view the status of the packaging and alarm in real time.

[0058] Finally, a packaging and transportation sliding monitoring intelligent label and monitoring feedback system is formed, the structure of which is as follows Figure 1 , Figure 2 , Figure 3 As shown in Figure 5, when the object slides during transportation, the smart tag converts the displacement movement into an electrical signal. After a series of transmissions, the mobile phone APP receives the alarm information. The actual effect diagram is shown in Figure 5(a) and Figure 5(b).

[0059] Example 1

[0060] A packaging and transportation sliding monitoring intelligent label printing preparation and monitoring feedback system is implemented in the following steps:

[0061] (1) Design the structure of the sliding monitoring intelligent indicator label. The internal sliding sensing layer 4, the sliding monitoring outer electrode 3, the sliding monitoring inner electrode 2, and the digital printing paper substrate 1 are designed to be of appropriate size and shape. Figure 1 , Figure 2 The mesh number of the structure of the smart indicator label is designed to be a 150-mesh screen printing plate, the inner diameter of the smart indicator label is 4 cm, the outer diameter of the outer circle is 7 cm, and the inner diameter of the outer circle is 6 cm; the preparation before manufacturing is carried out according to the above structural dimensions and screen printing parameters.

[0062] (2) Conductive copper ink was used to print and dry the ink on digital proofing paper by screen printing to obtain a uniform sliding monitoring inner electrode. The sliding monitoring inner electrode part used a customized screen with a mesh count of 150 meshes, a screen spacing of 2 mm, a printing pressure of 0.25 MPa, and a printing speed of 10 cm / s. The conductive copper ink was evenly deposited on the digital proofing paper and sintered on a hot plate at 120°C for 20 minutes.

[0063] (3) Based on step 2, the inner electrode is positioned and slid to monitor the movement, and the outer electrode is prepared by overprinting copper ink on a screen plate. The outer electrode is positioned and slid to monitor the movement, and the outer electrode is prepared by overprinting copper ink on a screen plate (150 mesh) to obtain a planarized nested electrode preparation.

[0064] (4) Take a certain mass of WPU, add 4% TiO2 powder by mass to mix with WPU, and prepare a composite ink using the mixed solution of water-based polyurethane and titanium dioxide as raw materials. Ultrasonic treatment is performed at room temperature for 1 hour, and then the WPU / TiO2 mixture is mechanically stirred at a speed of 700 rpm for 12 hours to ensure uniform mixing and achieve stable dispersion.

[0065] (5) By using a wire rod coater, it is coated on the top of the electrode and completely covered, annealed on a hot plate at 120°C for 30 min, and dried to form an internal sliding sensing layer. The various parts are nested to form a packaging and transportation sliding monitoring smart label.

[0066] (6) The smart tag is connected to a signal processing circuit. If the item moves during transportation, the smart tag converts the displacement motion into an electrical signal, and the signal processing circuit converts the AC continuous analog signal into a digital signal.

[0067] (7) The digital signal is transmitted to the NodeMCU digital input interface, which is then connected to the temperature and humidity sensor, flame sensor, vibration sensor and light sensor respectively. The digital output interface is connected to the relay to control the switch of the alarm. The smart tag can be used as an all-round sliding displacement sensor, integrating vibration, temperature and humidity, light and other sensors to build a complete IoT smart packaging system, which can realize comprehensive monitoring of goods.

[0068] (8) All data are transmitted to the cloud through the WI-FI module of NodeMCU, and the video surveillance module is transmitted to the cloud independently of other data.

[0069] (9) When the mobile phone APP receives the alarm information, the status of the displacement monitoring part changes from "normal" to "alarm". At the same time, the monitoring interface can also view the status of the packaging and the alarm in real time. The data is sent to the APP to issue the alarm information, and the video monitoring interface can also view the status of the packaging and the alarm in real time.

[0070] Finally, a packaging and transportation sliding monitoring intelligent label and monitoring feedback system is formed, the structure of which is as follows Figure 1 As shown in Figure 5, when the object slides during transportation, the smart tag converts the displacement movement into an electrical signal. After a series of transmissions, the mobile phone APP receives the alarm information. The schematic diagram of the working status of the smart tag and the detection feedback system is shown in Figure 5(a) and Figure 5(b).

[0071] Example 2

[0072] A packaging and transportation sliding monitoring intelligent label printing preparation and monitoring feedback system is implemented in the following steps:

[0073] (1) Design the structure of the sliding monitoring intelligent indicator label. The internal sliding sensing layer 4, the sliding monitoring outer electrode 3, the sliding monitoring inner electrode 2, and the digital printing paper substrate 1 are designed to be of appropriate size and shape. Figure 1 , Figure 2 The mesh number of the structure of the smart indicator label is designed to be a 170-mesh screen printing plate, the inner diameter of the smart indicator label is 4.5 cm, the outer diameter of the outer circle is 7.5 cm, and the inner diameter of the outer circle is 6.5 cm; the preparation before manufacturing is carried out according to the above structural dimensions and screen printing parameters.

[0074] (2) Conductive copper ink was used to print and dry the ink on digital proofing paper by screen printing to obtain a uniform sliding monitoring inner electrode. The sliding monitoring inner electrode part used a customized screen with a mesh count of 170 meshes, a screen spacing of 2 mm, a printing pressure of 0.35 MPa, and a printing speed of 10 cm / s. The conductive copper ink was evenly deposited on the digital proofing paper and sintered on a hot plate at 120°C for 20 minutes.

[0075] (3) Based on step 2, the inner electrode is positioned and slid to monitor the movement, and the outer electrode is prepared by overprinting copper ink on a screen plate. The inner electrode is positioned and slid to monitor the movement, and the outer electrode is prepared by overprinting copper ink on a screen plate (170 mesh) to obtain a planarized nested electrode preparation.

[0076] (4) Take a certain mass of WPU, add 6% TiO2 powder by mass to mix with WPU, and prepare a composite ink using the mixed solution of water-based polyurethane and titanium dioxide as raw materials. Ultrasonic treatment is performed at room temperature for 1 hour, and the WPU / TiO2 mixture is mechanically stirred at a speed of 700 rpm for 12 hours to ensure uniform mixing and achieve stable dispersion.

[0077] (5) By using a wire rod coater, it is coated on the top of the electrode and completely covered, annealed on a hot plate at 120°C for 30 min, and dried to form an internal sliding sensing layer. The various parts are nested to form a packaging and transportation sliding monitoring smart label.

[0078] (6) The smart tag is connected to a signal processing circuit. If the item moves during transportation, the smart tag converts the displacement motion into an electrical signal, and the signal processing circuit converts the AC continuous analog signal into a digital signal.

[0079] (7) The digital signal is transmitted to the NodeMCU digital input interface, which is then connected to the temperature and humidity sensor, flame sensor, vibration sensor and light sensor respectively. The digital output interface is connected to the relay to control the switch of the alarm.

[0080] (8) All data are transmitted to the cloud through the WI-FI module of NodeMCU, and the video surveillance module is transmitted to the cloud independently of other data.

[0081] (9) When the mobile phone APP receives the alarm information, the displacement monitoring part changes from "normal" to "alarm", and the video monitoring interface can also view the status of the packaging and the alarm in real time. The data is sent to the APP to issue the alarm information, and the video monitoring interface can also view the status of the packaging and the alarm in real time.

[0082] Finally, a packaging and transportation sliding monitoring intelligent label and monitoring feedback system is formed, the structure of which is as follows Figure 1 , Figure 2 , Figure 3 As shown in Figure 5, when the object slides during transportation, the smart tag converts the displacement movement into an electrical signal. After a series of transmissions, the mobile phone APP receives the alarm information. The working status of the smart tag and the detection feedback system is shown in Figure 5(a) and Figure 5(b).

[0083] Example 3

[0084] A packaging and transportation sliding monitoring intelligent label printing preparation and monitoring feedback system is implemented in the following steps:

[0085] (1) Design the structure of the sliding monitoring intelligent indicator label. The internal sliding sensing layer 4, the sliding monitoring outer electrode 3, the sliding monitoring inner electrode 2, and the digital printing paper substrate 1 are designed to be of appropriate size and shape. Figure 1 , Figure 2 The mesh number of the structure of the smart indicator label is designed to be a 190-mesh screen printing plate, the inner diameter of the smart indicator label is 5 cm, the outer diameter of the outer circle is 8 cm, and the inner diameter of the outer circle is 7 cm; preparations are made according to the above structural dimensions and screen printing parameters.

[0086] (2) Conductive copper ink was used to print and dry the ink on digital proofing paper by screen printing to obtain a uniform sliding monitoring inner electrode. The sliding monitoring inner electrode part used a customized screen with a mesh count of 190 meshes, a screen spacing of 2.5 mm, a printing pressure of 0.30 MPa, and a printing speed of 10 cm / s. The conductive copper ink was evenly deposited on the digital proofing paper and sintered on a hot plate at 120°C for 20 minutes.

[0087] (3) Based on step 2, the inner electrode is positioned and slid to monitor the movement, and the outer electrode is prepared by overprinting copper ink on a screen plate. The outer electrode is positioned and slid to monitor the movement, and the outer electrode is prepared by overprinting copper ink on a screen plate (190 mesh) to obtain a planarized nested electrode preparation.

[0088] (4) Take a certain mass of WPU, add 8% TiO2 powder by mass to mix with WPU, and prepare a composite ink using the mixed solution of water-based polyurethane and titanium dioxide as raw materials. Ultrasonic treatment is performed at room temperature for 1 hour, and the WPU / TiO2 mixture is mechanically stirred at a speed of 700 rpm for 12 hours to ensure uniform mixing and achieve stable dispersion.

[0089] (5) By using a wire rod coater, it is coated on the top of the electrode and completely covered, annealed on a hot plate at 120°C for 30 min, and dried to form an internal sliding sensing layer. The various parts are nested to form a packaging and transportation sliding monitoring smart label.

[0090] (6) The smart tag is connected to a signal processing circuit. If the item moves during transportation, the smart tag converts the displacement motion into an electrical signal, and the signal processing circuit converts the AC continuous analog signal into a digital signal.

[0091] (7) The digital signal is transmitted to the NodeMCU digital input interface, which is then connected to the temperature and humidity sensor, flame sensor, vibration sensor and light sensor respectively. The digital output interface is connected to the relay to control the switch of the alarm.

[0092] (8) All data are transmitted to the cloud through the WI-FI module of NodeMCU, and the video surveillance module is transmitted to the cloud independently of other data.

[0093] (9) When the mobile phone APP receives the alarm information, the status of the displacement monitoring part changes from "normal" to "alarm". At the same time, the video monitoring interface can also view the status of the packaging and the alarm in real time. The data is sent to the APP to issue the alarm information. The video monitoring interface can also view the status of the packaging and the alarm in real time.

[0094] Finally, a packaging and transportation sliding monitoring intelligent label and monitoring feedback system is formed, the structure of which is as follows Figure 1 , Figure 2 , Figure 3 As shown in Figure 5, when the object slides during transportation, the smart tag converts the displacement movement into an electrical signal. After a series of transmissions, the mobile phone APP receives the alarm information. The schematic diagram of the working status of the smart tag and the detection feedback system is shown in Figure 5(a) and Figure 5(b).

[0095] Example 4

[0096] A packaging and transportation sliding monitoring intelligent label printing preparation and monitoring feedback system is implemented in the following steps:

[0097] (1) Design the structure of the sliding monitoring intelligent indicator label. The internal sliding sensing layer 4, the sliding monitoring outer electrode 3, the sliding monitoring inner electrode 2, and the digital printing paper substrate 1 are designed to be of appropriate size and shape. Figure 1 , Figure 2 The mesh number of the structure of the smart indicator label is a 200-mesh screen printing plate, the inner diameter of the smart indicator label is 4.5 cm, the outer diameter of the outer circle is 7 cm, and the inner diameter of the outer circle is 6 cm; the preparation before manufacturing is carried out according to the above structural dimensions and screen printing parameters.

[0098] (2) Conductive copper ink was used to print and dry the ink on digital proofing paper by screen printing to obtain a uniform sliding monitoring inner electrode. The sliding monitoring inner electrode part used a customized screen with a mesh count of 200 meshes, a screen spacing of 3 mm, a printing pressure of 0.45 MPa, and a printing speed of 10 cm / s. The conductive copper ink was evenly deposited on the digital proofing paper and sintered on a hot plate at 120°C for 20 minutes.

[0099] (3) Based on step 2, the inner electrode is positioned and slid to monitor the movement, and the outer electrode is prepared by overprinting copper ink on a screen plate. The inner electrode is positioned and slid to monitor the movement, and the outer electrode is prepared by overprinting copper ink on a screen plate (200 mesh) to obtain a planarized nested electrode preparation.

[0100] (4) Take a certain mass of WPU, add 10% TiO2 powder by mass to mix with WPU, and prepare a composite ink using the mixed solution of water-based polyurethane and titanium dioxide as raw materials. Ultrasonic treatment is performed at room temperature for 1 hour, and then the WPU / TiO2 mixture is mechanically stirred at a speed of 700 rpm for 12 hours to ensure uniform mixing and achieve stable dispersion.

[0101] (5) By using a wire rod coater, it is coated on the top of the electrode and completely covered, annealed on a hot plate at 120°C for 30 min, and dried to form an internal sliding sensing layer. The various parts are nested to form a packaging and transportation sliding monitoring smart label.

[0102] (6) The smart tag is connected to a signal processing circuit. If the item moves during transportation, the smart tag converts the displacement motion into an electrical signal, and the signal processing circuit converts the AC continuous analog signal into a digital signal.

[0103] (7) The digital signal is transmitted to the NodeMCU digital input interface, which is then connected to the temperature and humidity sensor, flame sensor, vibration sensor and light sensor respectively. The digital output interface is connected to the relay to control the switch of the alarm.

[0104] (8) All data are transmitted to the cloud through the WI-FI module of NodeMCU, and the video surveillance module is transmitted to the cloud independently of other data.

[0105] (9) When the mobile phone APP receives the alarm information, the status of the displacement monitoring part changes from "normal" to "alarm". At the same time, the monitoring interface can also view the status of the packaging and the alarm in real time. The data is sent to the APP to issue the alarm information, and the video monitoring interface can also view the status of the packaging and the alarm in real time.

[0106] Example 5

[0107] A smart label for sliding monitoring, comprising a digital printing paper substrate 1, a sliding monitoring inner electrode 2 and a sliding monitoring outer electrode 3 are mutually sleeved by screen overprinting on the digital printing paper substrate 1, wherein the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 are formed by screen overprinting copper ink on the digital printing paper substrate 1, and a mixed solution WPU / TiO2 is coated on the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 and completely covers them to form an internal sliding sensing layer 4, wherein TiO2 in the mixed solution WPU / TiO2 accounts for 1wt% of WPU; an FEP tape is adhered to the bottom surface of the monitored object to form an external sliding sensing layer;

[0108] When the external sliding sensing layer and the internal sliding sensing layer 4 slide at any angle, a potential difference is generated between the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3. The potential difference causes the movement of electrons to generate current, thereby realizing the conversion of displacement motion of sliding at any angle into electrical signal output.

[0109] The sliding monitoring inner electrode 2 is circular and has a guide wire, with a diameter of 4 cm; the sliding monitoring outer electrode 3 is annular and has a guide wire, with an outer circle diameter of 7 cm and an inner circle diameter of 6 cm.

[0110] A method for preparing a smart label for sliding monitoring, comprising:

[0111] Step 1, on a digital printing paper substrate 1, copper ink is printed and dried by screen overprinting to obtain a sliding monitoring inner electrode 2 and a sliding monitoring outer electrode 3 which are nested with each other, and a planar nested electrode is obtained; the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 are made by screen overprinting, using a screen printing method with a mesh number of 150 meshes, a screen spacing of 2 mm, a printing pressure of 0.25 MPa, and a printing speed of 11 cm / s, and the screen overprinting is sintered on a hot plate at 120° C. for 22 minutes;

[0112] Step 2: Take a certain mass of waterborne polyurethane, add 1wt% TiO2 powder and mix to prepare a mixed solution WPU / TiO2; ultrasonically treat the mixed solution WPU / TiO2 for 1 hour, and mechanically stir it at a speed of 750rpm for 14 hours to ensure uniform mixing and stable dispersion. The specific amount of the mixed solution WPU / TiO2 shall be based on the requirements of screen printing and coating;

[0113] Step 3: The solution WPU is applied as ink on the top of the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 and completely covers them, and forms an internal sliding sensing layer 4 after drying; the mixed solution WPU / TiO2 is applied on the top of the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 by wire rod coating, and annealed on a hot plate at 120°C for 30 minutes;

[0114] Step 4: Glue FEP tape to the bottom surface of the monitored object to form an external sliding sensing layer; the external sliding sensing layer and the internal sliding sensing layer 4 slide and rub against each other to output alternating current, thereby obtaining a smart tag for sliding monitoring.

[0115] A monitoring system for sliding monitoring, comprising: a smart tag, a signal processing circuit, a NodeMCU module, a relay and an alarm;

[0116] Among them, the smart tag collects displacement motion and converts it into electrical signals, and transmits the electrical signals to the signal processing circuit. The signal processing circuit converts the electrical signals into digital signals, and the digital signals are transmitted to the digital input interface of the NodeMCU module. The digital output interface of the NodeMCU is connected to the relay, the relay is connected to the alarm, and the relay controls the switch of the alarm.

[0117] Example 6

[0118] A smart label for sliding monitoring, comprising a digital printing paper substrate 1, a sliding monitoring inner electrode 2 and a sliding monitoring outer electrode 3 are mutually sleeved by screen overprinting on the digital printing paper substrate 1, wherein the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 are formed by screen overprinting copper ink on the digital printing paper substrate 1, and a mixed solution WPU / TiO2 is coated on the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 and completely covers them to form an internal sliding sensing layer 4, wherein TiO2 in the mixed solution WPU / TiO2 accounts for 5wt% of WPU; an FEP tape is adhered to the bottom surface of the monitored object to form an external sliding sensing layer;

[0119] When the external sliding sensing layer and the internal sliding sensing layer 4 slide at any angle, a potential difference is generated between the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3. The potential difference causes the movement of electrons to generate current, thereby realizing the conversion of displacement motion of sliding at any angle into electrical signal output.

[0120] The sliding monitoring inner electrode 2 is circular and has a guide wire, with a diameter of 4.5 cm; the sliding monitoring outer electrode 3 is annular and has a guide wire, with an outer circle diameter of 7.5 cm and an inner circle diameter of 6.5 cm.

[0121] A method for preparing a smart label for sliding monitoring, comprising:

[0122] Step 1, on a digital printing paper substrate 1, copper ink is printed and dried by screen overprinting to obtain a sliding monitoring inner electrode 2 and a sliding monitoring outer electrode 3 which are nested with each other, and a planar nested electrode is obtained; the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 are made by screen overprinting, using a screen printing method with a mesh number of 180 meshes, a screen spacing of 2.5 mm, a printing pressure of 0.35 MPa, and a printing speed of 12.5 cm / s, and the screen overprinting is sintered on a hot plate at 120° C. for 25 minutes;

[0123] Step 2: Take a certain mass of waterborne polyurethane, add 5wt% TiO2 powder and mix to prepare a mixed solution WPU / TiO2; ultrasonically treat the mixed solution WPU / TiO2 for 1.25h, and mechanically stir it at a speed of 700rpm for 16h to ensure uniform mixing and stable dispersion. The specific amount of the mixed solution WPU / TiO2 shall be based on the requirements of screen printing and coating;

[0124] Step 3: The mixed solution WPU / TiO2 is applied as ink on the top of the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 and completely covers them, and forms an internal sliding sensing layer 4 after drying; the mixed solution WPU / TiO2 is applied on the top of the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 by wire rod coating, and annealed on a hot plate at 120°C for 40 minutes;

[0125] Step 4: Glue FEP tape to the bottom surface of the monitored object to form an external sliding sensing layer; the external sliding sensing layer and the internal sliding sensing layer 4 slide and rub against each other to output alternating current, thereby obtaining a smart tag for sliding monitoring.

[0126] A monitoring system for sliding monitoring, comprising: a smart tag, a signal processing circuit, a NodeMCU module, a relay and an alarm;

[0127] Among them, the smart tag collects displacement motion and converts it into electrical signals, and transmits the electrical signals to the signal processing circuit. The signal processing circuit converts the electrical signals into digital signals, and the digital signals are transmitted to the digital input interface of the NodeMCU module. The digital output interface of the NodeMCU is connected to the relay, the relay is connected to the alarm, and the relay controls the switch of the alarm.

[0128] Example 7

[0129] A smart label for sliding monitoring, comprising a digital printing paper substrate 1, a sliding monitoring inner electrode 2 and a sliding monitoring outer electrode 3 are mutually sleeved by screen overprinting on the digital printing paper substrate 1, wherein the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 are formed by screen overprinting copper ink on the digital printing paper substrate 1, and a mixed solution WPU / TiO2 is coated on the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 and completely covers them to form an internal sliding sensing layer 4, wherein TiO2 in the mixed solution WPU / TiO2 accounts for 10wt% of WPU; an FEP tape is adhered to the bottom surface of the monitored object to form an external sliding sensing layer;

[0130] When the external sliding sensing layer and the internal sliding sensing layer 4 slide at any angle, a potential difference is generated between the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3. The potential difference causes the movement of electrons to generate current, thereby realizing the conversion of displacement motion of sliding at any angle into electrical signal output.

[0131] The sliding monitoring inner electrode 2 is circular and has a guide wire, with a diameter of 5 cm; the sliding monitoring outer electrode 3 is annular and has a guide wire, with an outer circle diameter of 8 cm and an inner circle diameter of 7 cm.

[0132] A method for preparing a smart label for sliding monitoring, comprising:

[0133] Step 1, on a digital printing paper substrate 1, copper ink is printed and dried by screen overprinting to obtain a sliding monitoring inner electrode 2 and a sliding monitoring outer electrode 3 which are nested with each other, and a planar nested electrode is obtained; the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 are made by screen overprinting, using a screen printing method with a mesh count of 200 meshes, a screen spacing of 3 mm, a printing pressure of 0.45 MPa, and a printing speed of 15 cm / s, and the screen overprinting is sintered on a hot plate at 120° C. for 30 minutes;

[0134] Step 2: Take a certain mass of waterborne polyurethane, add 10wt% TiO2 powder and mix to prepare a mixed solution WPU / TiO2; ultrasonically treat the mixed solution WPU / TiO2 for 1 hour, and mechanically stir it at a speed of 900rpm for 12 hours to ensure uniform mixing and stable dispersion. The specific amount of the mixed solution WPU / TiO2 shall be based on the requirements of screen printing and coating;

[0135] Step 3: Apply the mixed solution WPU / TiO2 as ink on the top of the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 and completely cover them, and form an internal sliding sensing layer 4 after drying; the mixed solution WPU / TiO2 is applied on the top of the sliding monitoring inner electrode 2 and the sliding monitoring outer electrode 3 by wire rod coating, and annealed on a hot plate at 120°C for 45 minutes;

[0136] Step 4: Glue FEP tape to the bottom surface of the monitored object to form an external sliding sensing layer; the external sliding sensing layer and the internal sliding sensing layer 4 slide and rub against each other to output alternating current, thereby obtaining a smart tag for sliding monitoring.

[0137] A monitoring system for sliding monitoring, comprising: a smart tag, a signal processing circuit, a NodeMCU module, a relay and an alarm;

[0138] Among them, the smart tag collects displacement motion and converts it into electrical signals, and transmits the electrical signals to the signal processing circuit. The signal processing circuit converts the electrical signals into digital signals, and the digital signals are transmitted to the digital input interface of the NodeMCU module. The digital output interface of the NodeMCU is connected to the relay, the relay is connected to the alarm, and the relay controls the switch of the alarm.

[0139] The external sliding sensing layer in the smart label is installed at the bottom of the object. When the object moves, it can generate an electrical signal, forming a packaging and transportation sliding monitoring smart label and monitoring feedback system. The structure is as follows Figure 1 As shown in Figure 5, when the object slides during transportation, the smart tag converts the displacement movement into an electrical signal. After a series of transmissions, the mobile phone APP receives the alarm information. The schematic diagram of the working status of the smart tag and the detection feedback system is shown in Figure 5(a) and Figure 5(b).

[0140] In summary, the application of smart indicator labels in the protection and monitoring of goods during transportation not only improves the accuracy and efficiency of goods protection, but also provides new possibilities for the digital management and intelligent protection of goods. In the future, with the continuous advancement of new material development and printing technology, the application of smart indicator labels in the field of packaging transportation protection will be more extensive and in-depth. At the same time, the research and development and application of passive sensing devices will become one of the important directions for the development of goods transportation protection technology.

Claims

1. A smart label for sliding monitoring, characterized in that: The invention comprises a digital printing paper substrate (1), on which a sliding monitoring inner electrode (2) and a sliding monitoring outer electrode (3) are mutually overlapped by screen overprinting, a mixed solution WPU / TiO2 is coated on the sliding monitoring inner electrode (2) and the sliding monitoring outer electrode (3) and completely covers them, forming an internal sliding sensing layer (4), and a FEP tape is fixedly arranged on the bottom surface of the monitoring object, forming an external sliding sensing layer; When the external sliding sensing layer and the internal sliding sensing layer (4) slide at any angle, a potential difference is generated between the sliding monitoring inner electrode (2) and the sliding monitoring outer electrode (3). The potential difference causes the movement of electrons to generate current, thereby realizing the conversion of displacement movement of sliding at any angle into electrical signal output.

2. The smart label for sliding monitoring according to claim 1, characterized in that: The sliding monitoring inner electrode (2) and the sliding monitoring outer electrode (3) are obtained by screen-printing copper ink on a digital printing paper substrate (1), and TiO2 in the mixed solution WPU / TiO2 accounts for 1wt%-10wt% of WPU.

3. The smart label for sliding monitoring according to claim 1, characterized in that: The sliding monitoring inner electrode (2) is circular and has a guide wire, and the sliding monitoring outer electrode (3) is annular and has a guide wire.

4. The smart label for sliding monitoring according to claim 3, characterized in that: The outer circle diameter of the sliding monitoring outer electrode (3) is 7-8 cm, and the inner circle diameter is 6-7 cm; the diameter of the sliding monitoring inner electrode (2) is 4-5 cm.

5. A method for preparing a smart label for sliding monitoring according to any one of claims 1 to 4, characterized in that: include: Step 1: Printing and drying copper ink on a digital printing paper substrate (1) by screen overprinting to obtain a sliding monitoring inner electrode (2) and a sliding monitoring outer electrode (3) that are mutually nested to obtain a planar nested electrode; Step 2: Take a certain mass of waterborne polyurethane, add 1wt%-10wt% of TiO2 powder and mix to prepare a mixed solution WPU / TiO2; Step 3: Apply the mixed solution WPU / TiO2 as ink on the top of the sliding monitoring inner electrode (2) and the sliding monitoring outer electrode (3) and completely cover them, and form an internal sliding sensing layer (4) after drying; Step 4: The bottom surface of the monitored object is fixed with FEP tape to form an external sliding sensing layer; the external sliding sensing layer and the internal sliding sensing layer (4) slide and rub to output alternating current, thereby obtaining a smart tag for sliding monitoring.

6. The method for preparing a smart label for sliding monitoring according to claim 5, characterized in that: In the step 1, the sliding monitoring inner electrode (2) and the sliding monitoring outer electrode (3) are made by screen overprinting, using screen printing with a mesh count of 150-200 meshes, a screen spacing of 2-3 mm, a printing pressure of 0.25-0.45 MPa, and a printing speed of 10-15 cm / s. The screen overprinting is sintered on a hot plate at 120° C. for 20-30 minutes.

7. The method for preparing a smart label for sliding monitoring according to claim 5, characterized in that: In the step 2, the mixed solution WPU / TiO2 is ultrasonically treated for 1-1.5 hours and mechanically stirred at a speed of 700-900 rpm for 12-16 hours to ensure uniform mixing and stable dispersion.

8. The method for preparing a smart label for sliding monitoring according to claim 5, characterized in that: In the step 3, the mixed solution WPU / TiO2 is coated on the top of the sliding monitoring inner electrode (2) and the sliding monitoring outer electrode (3) by wire rod coating, and annealed on a hot plate at 120° C. for 30-45 minutes.

9. A monitoring system for sliding monitoring based on the smart label according to any one of claims 1 to 4, characterized in that: include: Smart tags, signal processing circuits, NodeMCU modules, relays and alarms; Among them, the smart tag collects displacement motion and converts it into electrical signals, and transmits the electrical signals to the signal processing circuit. The signal processing circuit converts the electrical signals into digital signals, and the digital signals are transmitted to the digital input interface of the NodeMCU module. The digital output interface of the NodeMCU is connected to the relay, the relay is connected to the alarm, and the relay controls the switch of the alarm.

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